ニホン・ドレン List of Products and Services

This is an introduction to a case of leak prevention work in the Sagawa Tunnel in Sagawa Town, Takaoka District, Kochi Prefecture, using "face drainage works." There was a widespread occurrence of leaks within the tunnel, and there was a request to ensure that the flow of water could be visualized even after construction. By using a transparent type of arch drain, extensive leak prevention measures were implemented in the tunnel on National Route 33, making it easier to visualize the flow of water over a wide area, and allowing for proper drainage conditions to be confirmed even after construction. [Challenges] - Widespread leaks were occurring within the tunnel. - There was a request to ensure that the flow of water could be visualized even after construction. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is an example of a tunnel leakage prevention construction project using "surface drainage" at the Taka Tunnel in the Sado Loop Line, located in Sado City, Niigata Prefecture. There were numerous cracks over a wide area at the top of the tunnel, leading to leakage. On the other hand, there was a request not to install drainage pipes in areas without leakage other than the top, necessitating efficient drainage measures. By installing a funnel-shaped catch basin between the side drain and the arch drain line, we were able to prevent water from pooling in the side drain, thereby improving drainage performance and reducing maintenance burdens. 【Case Summary】 ■Challenges - Numerous cracks over a wide area at the top of the tunnel were causing leakage. - There was a request not to install drainage pipes in areas without leakage other than the top, requiring efficient drainage measures. ■Results - We were able to improve drainage performance and reduce maintenance burdens. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is a case study of leak prevention work conducted at the Kurizaka Tunnel in Aomori City, Aomori Prefecture, using "surface drainage technology." Leakage from the spring line (SL) was causing the formation of ice pillars, which posed safety risks. Additionally, snow-melting pipes were installed on the sidewalk, making it difficult to manage water flow, necessitating effective countermeasures. To address the leakage from the SL, arch drain surface drainage was implemented, and side drains were installed for the drainage treatment of the water flow. The elimination of ice pillar formation meant that nighttime responses from management were no longer necessary, reducing the burden of maintenance. 【Case Overview】 ■Challenges - Leakage from the spring line (SL) was causing the formation of ice pillars, which hindered safety. - The presence of snow-melting pipes on the sidewalk made it difficult to manage water flow. ■Results - Nighttime responses from management were no longer necessary, reducing the burden of maintenance. - Leakage at the water flow was resolved, preventing road surface freezing and improving safety. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

We would like to introduce a case of leak prevention work in the Tonen Tunnel located in Tsuruga City, Fukui Prefecture, carried out by "Men-dousui Engineering." Due to corrosion of the existing galvanized steel plates (SI boards), their removal led to water leakage from the walls, which could potentially affect the surrounding healthy SI boards, necessitating new leak prevention measures. An arch roofing was installed to match the thickness of the existing SI boards, and caulking was applied at the joints to ensure water diversion. This also improved the appearance. [Challenges] ■ The existing galvanized steel plates (SI boards) were corroded, leading to water leakage from the walls upon removal. ■ There was a possibility of affecting the surrounding healthy SI boards, requiring new leak prevention measures. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is an introduction to a case of leak prevention work conducted by "line-guided waterworks" at the Minotani Tunnel in Kamikawa Town, Hyogo Prefecture. Water leakage was occurring from the walls of the unlined shotcrete tunnel, causing dripping onto the road, which was a problem. By installing a shield drain at the leak points of the shotcrete tunnel, we were able to prevent the leakage, ensuring that dripping water no longer affected passing vehicles and pedestrians. [Case Summary] ■ Issue - Water leakage was occurring from the walls of the unlined shotcrete tunnel, dripping onto the road. ■ Result - By installing shield drains at the leak points, we prevented the leakage, eliminating the dripping water affecting passing vehicles and pedestrians. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is an introduction to a case of leak prevention work conducted by "Sen Dousuiko" at the Kageji Tunnel in Ono City, Fukui Prefecture. At the site, water leakage was occurring from the side of the existing steel plate (5mm thick). On the other hand, since the removal of the existing steel plate was not possible and the tunnel cross-section was small, there was a request to minimize protrusion from the wall, necessitating effective countermeasures. By installing seal drains, we were able to prevent water leakage, eliminating dripping onto the road. [Challenges] ■ Water leakage was occurring from the side of the existing steel plate (5mm thick) ■ Removal of the existing steel plate was not possible ■ Due to the small tunnel cross-section, there was a desire to minimize protrusion from the wall *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is an introduction to a case of leak prevention work using "line drainage" at the Sakaimi Tunnel on the Hokuriku Expressway in Niigata Prefecture. Water leakage occurred from the joints in the section where the tunnel's cross-section changes. Additionally, there was a 40mm step at the joint, and multiple lighting fixtures and racks were installed nearby, making it difficult to install arch drains, thus requiring effective countermeasures. By installing a 500mm side drain (SDS) and directing the water leakage from the joint to the drainage channel beside the tunnel, dripping onto the road was eliminated. 【Case Summary】 ■ Issues - Water leakage occurred from the joints in the section where the tunnel's cross-section changes. - Due to the step at the joint and the presence of multiple lighting fixtures and racks nearby, it was difficult to install arch drains. ■ Results - As a result of directing the water leakage from the joint to the drainage channel beside the tunnel, dripping onto the road was eliminated. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is a case study of water leakage countermeasures in the Shimohanbara Tunnel located in Ono City, Fukui Prefecture, implemented by "water guiding works." Due to the small cross-section of the tunnel, the existing water guiding pipes were frequently damaged by contact with large trucks, leading to water leakage issues. The section of the tunnel wall where the box trucks were making contact was chiseled away, and the existing pipes were replaced with embedded pipes using Arch Drain Cold-Resistant Transparent (AD030 Cold-Resistant Transparent). By changing to an embedded type, the protrusion was eliminated, resolving the damage caused by contact within the tunnel and preventing water leakage. 【Case Overview】 ■ Issues - The small cross-section of the tunnel led to frequent damage of the existing water guiding pipes due to contact with large trucks (box trucks), resulting in water leakage. ■ Results - Changing to an embedded type eliminated protrusions, resolved damage caused by contact within the tunnel, and prevented water leakage. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

This is an introduction to a case of leak prevention work carried out by "Sen-do Water Works" at the Chidai Tunnel in Chidai Town, Ishikawa Prefecture. There was leakage from the joints and cracks in the tunnel, which posed a problem as dripping water affected passing vehicles and pedestrians. As a leak prevention measure, an Arch Drain AD026, which is resistant to cold, was installed at the leak points in the tunnel. With the installation of the drain, the leakage was prevented, and the dripping water no longer affected passing vehicles and pedestrians. 【Case Summary】 ■ Issue - Leakage from cracks was affecting passing vehicles and pedestrians. ■ Result - The installation of the drain prevented leakage, and passing vehicles and pedestrians were no longer affected by the water. *For more details, please download the PDF or feel free to contact us.

• Renovation and repair methods

The "Mitsuba Drain" is an underground drainage pipe that maintains stable drainage performance over a long period of time, thanks to its honeycomb-like special structure that suppresses the intrusion of soil and foreign objects. Inside the clustered structure, multiple water channels are provided, enabling efficient water collection and drainage. It also boasts excellent durability, making it suitable for use under conditions with soil pressure. Our company also offers the "Slope Drain," which is suitable for handling infiltrated water and spring water on slopes and embankments, allowing for flexible product proposals tailored to the usage environment. 【Features】 ■ High drainage performance and water collection capacity ensured by the honeycomb-like special shape ■ Internal structure that minimizes clogging from soil and foreign objects ■ Pressure resistance unique to clustered pipes allows for use even in high embankments *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Drainage and ventilation equipment

This document is a column article introducing the drainage pipes that are active in water purification plants. It provides detailed information on methods for drying sludge, such as sun drying and mechanical dewatering, as well as experiments comparing the performance of drainage pipes on sun drying beds. It includes photographs and serves as a useful reference. Please feel free to download and take a look. [Contents] ■ Water purification plants are facilities that produce drinking water ■ Sun drying beds for drying sludge ■ Drainage pipes active on sun drying beds ■ Comparison of drainage pipe performance on sun drying beds ■ Mitsuba drains active in water purification plants around the world ■ Summary *For more details, please download the PDF or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel

This document is a column article introducing three easy methods to improve drainage. It details the causes of poor drainage in gardens, such as "rainwater not penetrating clay soil," "uneven surfaces in the garden where water tends to accumulate," and "lack of proper water slope," along with simple improvement points. If you are struggling with poor drainage in your garden, please consider this as a reference. [Contents] ■ What is drainage? ■ Causes of poor drainage in gardens ■ Simple improvement points ■ If drainage still does not improve, consider hiring a professional ■ Summary *For more details, please download the PDF or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel

This document is a column article introducing methods for draining and improving water accumulation in puddles. It provides detailed information on the reasons for poor drainage in grounds, how to drain accumulated water by yourself, and how to fundamentally improve drainage by hiring a contractor. If water accumulation in the ground is rare, you can refer to methods for draining it yourself. However, if water consistently accumulates and does not recede easily, consider hiring a contractor for a fundamental improvement. 【Contents】 ■ Causes of poor drainage in grounds ■ How to drain accumulated water from the ground by yourself ■ How to improve drainage by hiring a contractor ■ Summary *For more details, please download the PDF or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel

This document is a column article explaining "drainage pipes," a type of waterway that flows underground. It details the importance of underground drainage, the history of underground drainage, and various shapes of drainage pipes. It includes photographs and serves as a useful reference. Please feel free to download and take a look. 【Contents (partial)】 ■ What is a drainage pipe (underground drainage pipe)? ■ History of underground drainage ■ Introduction to the benefits of improving drainage ■ How is a drainage system constructed? ■ Where are drainage pipes used? Applications, etc. *For more details, please download the PDF or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel

This document is a column article explaining the drainage equipment "drainage gutters" that drain water leakage from joints and cracks in tunnels, underground structures, and buildings. It provides detailed information on the mechanisms and types of drainage gutters, such as linear drainage gutters and surface drainage gutters, as well as the history of drainage gutters and the differences between water stopping and water guiding. Water leakage can cause the concrete walls and surrounding areas to corrode, leading to the deterioration of the structure. Additionally, if there is moisture from water leakage, mold and bacteria can thrive, resulting in a musty smell and affecting the hygiene of the living environment. [Contents] ■ Mechanisms and types of drainage gutters ■ History of drainage gutters ■ Differences between water stopping and water guiding ■ Necessary functions of drainage gutters ■ Various applications of drainage gutters ■ Examples of drainage gutter installations to prevent water leakage in tunnels <video> *For more details, please download the PDF or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel

"Arch Roofing Water Guide" is an aluminum laminated composite material that allows for reliable water stopping due to its evenly pressurized structure. It excels in water resistance, impact resistance, and fire resistance, and the panels can be easily removed, allowing for the removal of free lime and other debris from the gutters. Please feel free to contact us when you need our services. 【Features】 ■ Lightweight and high rigidity ■ Flatness ■ Water resistance ■ Impact resistance ■ Corrosion resistance and weather resistance *For more details, please download the PDF or feel free to contact us.

• Tunnel Materials

The summer of 2024 continued to have hot days, with temperatures exceeding 30 degrees even into September. According to an announcement by the Japan Meteorological Agency on September 2, the temperatures from June to August 2024 were the highest since the agency began recording statistics in 1898, tying with last year. We will also discuss why this summer has been so hot, the reasons for the increasing temperatures year by year, and how long this abnormal heat is expected to last. *For more details on the column, please refer to the related links. Feel free to contact us for more information.*

• others

In August 2024, due to the occurrence of an earthquake with a magnitude exceeding 7 originating from the Hyuga-nada, it was considered that the likelihood of a Nankai Trough earthquake had increased. Consequently, the government issued an emergency information alert regarding the Nankai Trough earthquake (warning of a major earthquake). At that time, one week after the occurrence of the earthquake, the government concluded its "special alert" associated with the emergency information regarding the Nankai Trough earthquake (warning of a major earthquake). However, the Nankai Trough earthquake is regarded as one that could occur at any time. What kind of earthquake is the Nankai Trough earthquake, and what kind of damage is anticipated if it occurs? Let’s confirm this along with the earthquake preparedness measures that can be taken individually. *For detailed information on the column, please refer to the related links. For more details, feel free to contact us.*

• Disaster prevention supplies

Are you aware of the difference between a "drain" and a "drainage ditch"? Do you know which one is found in places like kitchen sinks or bathrooms? This time, we will introduce the differences between a drain and a drainage ditch, as well as some self-help methods you can use when a drain pipe gets clogged. *You can view the detailed content of the column through the related links. For more information, please feel free to contact us.*

• Drainage and ventilation equipment

In recent years, global warming has accelerated, leading to an increase in abnormal weather and natural disasters in Japan. As a result, there is growing attention on "green infrastructure" as a means of sustainable infrastructure development. This time, we will introduce what green infrastructure is, the benefits and challenges of implementing it, and examples from municipalities that have adopted it. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*

• Information and communication equipment and infrastructure

In Japan, it is taken for granted that turning on the tap will provide drinking water. However, in recent years, the aging of water pipes has raised concerns about the continuation of current water supply services. You may have also seen news about water pipes bursting due to aging. This time, we will introduce not only the current situation and risks of aging water pipes but also how to check for water leaks in your own pipes. *For detailed content of the column, you can view it through the related links. Please feel free to contact us for more information.

• Piping Equipment

In recent years, the term "infrastructure" has been used in various ways, so there may be many people who do not understand what infrastructure specifically refers to. This time, we will provide a detailed explanation of the overview, types, and challenges facing infrastructure. *You can view the detailed content of the column through the related links. For more information, please feel free to contact us.*

• Information and communication equipment and infrastructure

Seal Drain developed as a measure against water leakage from uneven wall surfaces. It does not violate architectural limits and is aesthetically pleasing. We have released a video summarizing the installation method of Seal Drain in one and a half minutes. *For more details, you can view them through the related links. Please feel free to contact us for more information.

• Waterproof tape, adhesive, drain, protective panel

We have released a CG video of our new company building, which has been established and relocated alongside our headquarters and factory. This new building integrates sales, design, and manufacturing processes to enhance our development capabilities. The concept of the new building is "Draped in Rain," creating an "infinite cycle of rainwater" throughout the entire site. *For more details, please refer to the related links. Feel free to contact us for more information.

• others

The quality management technology of Japan's water supply, which makes tap water delicious, is among the best in the world. The water treatment plants managing Japan's water quality can be considered the culmination of water quality management technology. Did you know that drainage pipes are actually playing an active role in these water treatment plants? This time, we will introduce the drainage pipes that are active in water treatment plants. *For more details on the column, you can view it through the related links. Please feel free to contact us for more information.

• Piping materials (copper pipes, cast iron pipes)

The "Mitsuba Drain" is a drainage pipe with a structure suitable for circulating water and air in the soil. By making the collection openings continuous slits (linear) and increasing the collection area, it achieves overwhelming collection and drainage performance. It is less likely to become clogged with deposits such as water stains, and even if one drainage route is blocked, water can be diverted to other drainage routes. Additionally, when buried under railway tracks as a countermeasure against mud eruptions, it has excellent pressure resistance to withstand the repeated loads of trains. 【Features】 ■ Overwhelming collection and drainage performance ■ Does not clog ■ Resistant to root intrusion ■ Excellent pressure resistance ■ Suitable for improving soil environment *For more details, please refer to the related link page or feel free to contact us.

• Other civil engineering services

An "ankyu" refers to a waterway buried underground, and the method of improving drainage by flowing and draining infiltrated water from the surface into it is called "ankyu drainage." Historically, ankyu drainage using bamboo and sod bundles has been practiced, but currently, resin materials are mainstream, and various shapes of ankyu drainage pipes are available on the market. Our "Mitsuba Drain" is chosen by many companies and municipalities due to its high performance and ease of installation. [Shape Comparison (Partial)] ■ Mitsuba Drain - Multi-drainage channel in one cross-section - Honeycomb structure ■ Perforated Pipe - Single drainage channel in one cross-section - Circular pipe with small holes scattered throughout *For more details, please refer to the related links or feel free to contact us.

• Other civil engineering services

"The Drainage Busters" is a professional team specializing in underground drainage, proudly representing Nihon Drain. This volunteer team visits facilities struggling with poor drainage to install underground drainage systems free of charge and to educate about the relatively unknown "underground drainage." If you have any issues related to poor drainage or the installation of underground drainage pipes, please feel free to contact us. 【Activities of the Drainage Busters】 ■ Volunteer Activities - Installation of underground drainage systems free of charge for welfare and public facilities ■ Proposals and Installation for Drainage Improvement - We accept paid proposals and installations for drainage improvement *For more details, please refer to the related links or feel free to contact us.

• Other services and technologies

The "3D Lab" can use over 30 types of filaments and can create high-precision surfaces. The molding time is up to 120 hours, with a maximum size of 300×300×300mm. It is capable of producing high-precision surfaces with a minimum layer pitch of 0.01mm, eliminating the need for post-processing. We design and manufacture according to the conditions on-site and the customer's requests, so please feel free to consult us when needed. 【Features】 ■ Capable of creating high-precision surfaces ■ Over 30 types of filaments available ■ Various molding methods for resins ■ Total support up to mass production *For more details, please refer to the PDF materials or feel free to contact us.

• Other services and technologies

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is less prone to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and construction site drainage works. 【Construction Example】 ■ Bizen City General Sports Park (Okayama) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that we handle, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and construction site drainage works. 【Construction Example】 ■ Kasai Rinkai Park (Chiba) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various locations. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments with raised earth, such as around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and land development drainage works. 【Construction Examples】 ■ Mitsuzawa Stadium (Kanagawa) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that we handle, is used in various sites. With collection points around the entire circumference, it can efficiently collect water from any direction. It is less prone to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as raised embankments near roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and construction site drainage works. 【Construction Examples】 ■Koshi High School (Fukui) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as in grounds, parks, construction site drainage works, and other measures against groundwater. 【Construction Examples】 ■ Park *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it can efficiently collect water from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and land development drainage works. 【Construction Example】 ■ Nissan Stadium (Yokohama International Stadium) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that we handle, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as raised embankments around roads, railways, and rivers, as well as in grounds, parks, construction site drainage works, and other groundwater measures. 【Construction Examples】 ■ Edogawa Flood Control Greening Project *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for ground, parks, land development drainage works, and other groundwater countermeasures. 【Construction Examples】 ■ Okushiga Kogen Erosion Control Project (Nagano) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin pipes with slits that we handle, is used in various locations. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as raised embankments near roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and construction sites. 【Construction Examples】 ■ Mitsuba Drain *For more details, please refer to the PDF document or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it can efficiently collect water from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as in grounds, parks, construction site drainage works, and other groundwater measures. 【Construction Examples】 ■ Groundwater Measures Project (Fukui) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as in fields, parks, construction site drainage works, and other groundwater countermeasures. 【Construction Examples】 ■ Field Improvement (Fukui) *For more details, please refer to the PDF document or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments near roads, railways, and rivers, as well as in grounds, parks, land development drainage works, and other measures against spring water. 【Construction Examples】 ■ Okushiga Kogen Erosion Control Project (Nagano) *For more details, please refer to the PDF materials or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin pipes with slits that we handle, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments near roads, railways, and rivers, as well as in grounds, parks, construction site drainage works, and other measures against groundwater. 【Construction Example】 ■ Health Forest (Okayama) *For more details, please refer to the PDF document or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that our company handles, is used in various locations. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and land development drainage works. 【Construction Example】 ■ Shin-Kemigawa North Specific District Development *For more details, please refer to the PDF document or feel free to contact us.

• Sanitary fixtures

The drainage pipe "Mitsuba Drain," which consists of multiple bundles of thin drainage pipes with slits that we handle, is used in various sites. With collection points around the entire circumference, it allows for efficient water collection from any direction. It is resistant to clogging and has excellent water flow due to its smooth inner surface. It is effective for use in environments such as high embankments around roads, railways, and rivers, as well as for groundwater measures in grounds, parks, and land development drainage works. 【Construction Examples】 ■ Yokohama Stadium (Kanagawa) *For more details, please refer to the PDF document or feel free to contact us.

• Sanitary fixtures

"Mizuderun" is a well pipe with a clog-resistant structure that has six drainage spaces. The water collection inlet is divided into six slits, which enhances its water collection capability, and the drainage channels are located on the front, making it resistant to clogging. It can be used for drainage materials and water collection valves. 【Features】 ■ High water collection capability ■ Resistant to clogging ■ Smooth drainage *For more details, please refer to the PDF document or feel free to contact us.

• Piping and insulation